Perhaps you should try some spelling variations:
training costs » trading costs, training courses, training course
risk training » risk taking, bank training, risk planning
dong skin » dong sin, dong bin, dof skin
wan yan » wang yan, nan yan, wai yan
how shu » how she, how shih, how slum
ka a » kai a, a a, k a

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wan yan) or (dong skin)) ka a risk training costs how shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wan yan) OR (dong skin)) ka a risk training costs how shu ;.
• Adding a wildcard symbol may retrieve word variants: ((wan yan) or (dong skin)) ka a risk training costs how shu ;*.